On Fri, 2018-01-19 at 15:26 +0800, Ming Lei wrote: > Please see queue_delayed_work_on(), hctx->run_work is shared by all > scheduling, once blk_mq_delay_run_hw_queue(100ms) returns, no new > scheduling can make progress during the 100ms. How about addressing that as follows: diff --git a/block/blk-mq.c b/block/blk-mq.c index f7515dd95a36..57f8379a476d 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1403,9 +1403,9 @@ static void __blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async, put_cpu(); } - kblockd_schedule_delayed_work_on(blk_mq_hctx_next_cpu(hctx), - &hctx->run_work, - msecs_to_jiffies(msecs)); + kblockd_mod_delayed_work_on(blk_mq_hctx_next_cpu(hctx), + &hctx->run_work, + msecs_to_jiffies(msecs)); } void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs) Bart. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
